Energy Problems Quiz

Which will heat up faster?

• copper

• granite

• iron

• basalt

Which of the following best explains why the sand at the beach is hotter than the water?

• Sand has a higher specific heat than water.

• Sand has a lower specific heat than water.

• There is more water than sand at the beach.

• There is more sand than water at the beach.

The amount of energy required to raise the temperature 1ºC for every gram is called____?

• Thermal Energy

• Specific Heat

• Temperature

• Kinetic Energy

What unit do you use to measure heat energy?

• J/Kg ºC

• Kg

• ºC

• J

What letter is used to represent specific heat capacity?

• H

• P

• C

• T

What is the formula to calculate heat energy required to raise the temperature of any substance?

• Q=mC∆T

• Q=mC

• Q=m∆H_fus

• Q=m∆H_vap

The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?

• 66.5 J

• 665 J

• 0.0266 J

• 0.665 J

The temperature of an unknown piece of metal with a mass of 30.00 g changes from 25.0 °C to 35.0 °C when the metal absorbs 350.0 J of energy. What is the specific heat of the metal?

• 1.17 J/g°C
• -1.17 J/g°C
• 0.857 J/g°C
• -0.857 J/g°C

The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?

• 12.82 °C

• 24.12°C

• 1.95 °C

• 5128 °C

What are the units for specific heat capacity?

• J kg / °C

• J / kg / °C

• J / °C

• J / kg

• kg °C / J